Spatial focus for UWB signals

Method of focus in the time domain and its analogue, a method of radiowave tomosynthesis in the frequency domain by the criterion of level artifacts in the reconstructed radio images of the test object are compared. To verify the advantages of focus in the time domain method numerical model of clocked nonequidistant flat antenna array has been developed at the Department of Radio Physics at Tomsk State University

A comprehensive study of underground animals habitat

This paper describes a method of studying the natural habitats of underground animals by the example of zokor. The purpose of the research is to find habitation of animals using unmanned aircraft and investigate networks of tunnels and burrows with ground penetrating radar "OKO-2". Geolocation data were processed by techniques developed by the authors

Refining of metal melts by filtration method

The article describes the prerequisites of filtration refining of metal melts. When filtering the liquid metals the refining effect is caused by the deposition on the filter surface of suspended non-metallic particles in the melt, and by the release of the non-metallic phase directly from the melt. Along with this the mechanism of melt refining from a superequilibrium dissolved impurity is realized when filtering as a result of the reaction course of chemical binding of the impurity element

Iridology

Iridology is a long-range method of topical nonspecific diagnosis of human body organs and systems diseases. It analyzes the changes of the stroma, the pupil of the eye and a chromatophore structure of the iris. Positive results of applying iridology to examine patients are described in the article.Иридодиагностика - перспективный метод топической неспецифической диагностики заболеваний органов и систем человеческого организма по изменениям стромы, зрачка и хроматофорных структур радужной оболочки глаза. Приведены позитивные результаты иридодиагностики при осмотре пациенто

Study of oligotrophic bog by ground-penetrating radar

The work deals with study of peat deposits of oligotrophic bog and spatial distribution of snow cover by geolocation. Data from ground penetrating radar were compared with the data of conventional measurements of a peat depth and snow cover. A fairly good agreement between the thickness of the peat deposits, snow depth by using ground penetrating radar and the data of conventional measurements has been obtained

The method to obtain of the aggloburden sintering material using the conversion of natural gas

The paper considers the processes of direct production of iron from ores, which a re called solid-phase reduction processes. A technology for the production of metallized agglomerate is proposed, consisting of two stages: sintering of agglomerate and subsequent metallization of hot intact sintered material. The combined sintering process and metallization with the products of natural gas conversion of the agglomerate at an elevated pressure of the gas phase resulted in the metallization of 50 - 68 % metallized sinter

Comprehensive thermodynamic study of methylprednisolone

© 2016 Elsevier LtdIn the present work the temperature dependence of heat capacity for methylprednisolone has been measured for the first time over the temperature range from 6 to 350 K using by precision adiabatic vacuum calorimetry. Based on the experimental data, the thermodynamic functions of the methylprednisolone, namely, the heat capacity, enthalpy H°(T) − H°(0), entropy S°(T) − S°(0) and Gibbs function G°(T) − H°(0) have been evaluated from the experimental values for the range from T → 0 to 350 K. Standard molar enthalpy of combustion (−11898.9 ± 6.7) kJ·mol−1 of the methylprednisolone was measured for the first time using high-precision combustion calorimeter. The standard molar enthalpy of formation in the crystalline state (−1045.8 ± 7.3) kJ·mol−1 of compound at 298.15 K was derived from the combustion experiments. The standard molar enthalpy of sublimation at 298.15 K (194.5 ± 2.2) kJ·mol−1 was measured by using the quartz-crystal microbalance (QCM). Using combination of the adiabatic and combustion calorimetry with the result from QCM, the thermodynamic functions of the methylprednisolone at T = 298.15 K and p = 0.1 MPa have been calculated

Thermodynamic properties of myo-inositol

© 2017 Elsevier Ltd In the present work, the temperature dependence of heat capacity of vitamin B8 (myo-inositol) has been measured for the first time over the range from 8 K to 340 K by precision adiabatic vacuum calorimetry. Based on the experimental data, the thermodynamic functions of the vitamin B8, namely, the heat capacity, enthalpy H°(T)–H°(0), entropy S°(T)–S°(0) and Gibbs function G°(T)–H°(0) have been determined for the range from T → 0 K to 340 K. The value of the fractal dimension D in the function of multifractal generalization of Debye's theory of the heat capacity of solids was estimated and the character of heterodynamics of structure was detected. The enthalpy of combustion (−2747.0 ± 2.1) kJ·mol−1 of the vitamin B8 was measured for the first time using high-precision combustion calorimeter. The standard molar enthalpy of formation in the crystalline state (−1329.3 ± 2.3) kJ·mol−1 of B8 at 298.15 K was derived from the combustion experiments. Using combination of the adiabatic and combustion calorimetry results the thermodynamic functions of formation of the myo-inositol at T = 298.15 K and p = 0.1 MPa have been calculated. The low-temperature X-ray diffraction was used for the determination of coefficients of thermal expansion

Thermodynamic properties of methylprednisolone aceponate

© 2016 Elsevier LtdIn the present work, temperature dependence of heat capacity of methylprednisolone aceponate has been measured for the first time over the range from 7 K to 346 K by precision adiabatic vacuum calorimetry. Based on the experimental results, the thermodynamic functions of the methylprednisolone aceponate, namely, the heat capacity, enthalpy H°(T)−H°(0), entropy S°(T)−S°(0) and Gibbs function G°(T)−H°(0) have been determined for the range from T/K → 0–333. The enthalpy of combustion (−14304.4 ± 9.1) kJ·mol−1 of the methylprednisolone aceponate was determined for the first time using high-precision combustion calorimeter. The standard molar enthalpy of formation in the crystalline state (−1465.3 ± 9.8) kJ·mol−1 of compound at 298.15 K was derived from the combustion experiments. Using a combination of the adiabatic and combustion calorimetry results the thermodynamic functions of formation of the folic acid dihydrate at T = 298.15 K and p = 0.1 MPa have been calculated